a good pre amp with remote usd6000 or less used

I would add the Pass labs XP-20 to your list, as well as the 2 chassis Modwright 36.5 The Ref5 is going to set you back at least 8K used, but you can get a Ref3 for less than 6K.

my friend on vacation for 2 weeks..he pass me his Mark Levinson for 2 weeks.., 8k...is a lot of $ for a preamp

ref3 seem hold his value good, seem no harm to try

6000 may be able to get a x-20 , i never really heard any modwright..wondering how;s it sounded?

"8k...is a lot of $ for a preamp"
Yes it is!!! But,in life,you usually get what you pay for.It may well be worth it.
On the other hand,the Bel canto Pre 2 was a $3500 over-achiever from 2004 until recently retired.I purchased a mint unit here on A-Gon with box,manual and two remotes for less than $1000.I can't say that I have owned a finer preamp(I have owned Krell,BAT,AR,Sonic Frontiers,Cary,Muse,Plinius...)

8 K for Gods sake come back to earth, try a Coda,, Innersound, these guys just dont make bad stuff and its priced fair

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The Pass Labs X-02 is nowhere in the class of the Audio Research Ref3. Go with the Ref3, it is a stellar performer.
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